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nth Term of an AP

What is the 8...

Question

What is the 8th term of the A.P -4, 4, 12, 20...?

A

54

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B

50

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C

52

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D

48

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Solution

The correct option is C 52
nth term of an AP = a + (n-1)d
Therefore, the 8th term of the A.P = $- 4 + (8 - 1) 8 = - 4 + 7(8)$
= -4 + 56 = 52.

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